Book lock



April 2, 1929. M. H. JAcKsoN BOOK LOCK Filed 00T.. 2l, 1927 f fulfil."

CFI

Fatented Apr. 2, 1929.

' "UNITED STATES MARSHAIIL lnllmoioi, o'F etileno@ airliners.

[1360K Loox.

oppneetidn :niet october V21, 1927. `serial i no. Ierratas.

Th invention relates `to book looksandihae among' ite object-e theprovisioniot -a ennple lmfkino' device thatinay be readily applied to the current orinsiof booke, particularly loose leeft booke., eo `as to prevent unauthorized openinggJ-oit the naine. y y y there are at present.available `hookeyeuch ae ]nivato ledgers and the like, in which the book covers are provided at their edges with a lniiltin iocking)` `device permitting 'the owner oit :the book to hold the saine locked and iinri-iventinp;others itroin having Laceess to the contente thereof. y i

Very olton :it is desired .to lock a ibook, the covers ot" which have ino't a builtin locking,- device. By nieane of the vdevice :olf the present invent-i on any lot `the `ordinary hooks `1n ay be transformed into a looked book by the application of a -very einiple lockingfstigapa1'- ranged to be anchored between the book covers and a `lockingl claino arranged to embrace and holdtogetherthe open :edges off the icovers9 the clamp `having.a editable looking 4connection with the projecting portion fot `the strap. y i

Vl`he invention ivf l be best understoodroin the following; dee iiptionoit an exeinplitiea tion thereof, yreterenoe being had `to "the aoconipanyingl drawings, wherein y l-lip l ie a perepecf've view oit' a ibookiprol with a locking device accor/lingto the `franaverne eeetional view through theiiine Llull.;

hief. l i:-: a traiinverno sieetionalviow "through a boiVV ilirorideil -with 1a locking? device eini a niodiliention ot the invention;

A a i'aorepective view lol a. nortion oli rating the application of n eine@ pleinon :il locking; device :tor holding the end odore oi a book looked;

Fin'. 5 in a iragnienlary horizmilal eectiiiln through lllin'. elf; and

liii (i a vertml V ln Fi l and 2 there is illustrated foi-the purpose et exempli "ing the invention a loose Sectional v-.iew Athro egli ible for booke ot rdi lea l book oll toniiliar torni :in which a package 'l oi Substantially rectangular sheets or leaves is; clamped at one eide.) conetitnting the back 3 ol? thebook, between two rigid covers l and 5. rlhe boek illustrated in the drawing is of the loose leat' type, the leaves beingl held on posts G which are suitably looked in anchoring brackets 7 in therear edges of *the two covers land 5.

It is often desired to uarrange euch books as `to .permit locking' et the-openedges ot the covers `to prevent unauthorized `insee/etioniotheeoutentsiofthe ibook. AI-leretotore, ae tar as 11am-aware, special looking or clamping devices had to be built in or otherwise permanently embodied 'in the covers of the booki-n `order toperinit locking` thereof. Accordingl to the present inventioinany bookfot the type illustrated maybe `trans'formed into a locked book without niakingiany `changes in the arrangement ofthe bookiand without requiring theqorovisionofspecial elainpingdevices `that are lpern'ianently connected or :if stened to .the coversor `other @arts i of the book.

Ae Shown in theidrawing llproiv-ide tothis end sheet-metal strap lll `having' its 1f`ear end l2 bentatfan angle-ot 900 eo as to rolverlap thevrearetlges of the leaveaand its front end formed `into aji'loopor staple member 13 arranged to pnoject in front" or' the edges of the vbook lleawes. A yUehaiped -iloc'king uclanrp or yoke l5 adapted to liitovere-nid hold together the lopen .edges ofthe book covers i and zhas -aifperlorationfor elot lr6-@adapted to lit `over the loop *member L13 fot-the strap so as `to ,permit iineertion :of the clamp "1;5 over the book edges with the istaple member 13 proj iting throughthelelot 16 in iront thereoli. A Small `@Laad-.lock 1.7 Ymay then be Vpassed rigii'l `in atenial ,ei ich as braise oreteel, `that w ill not remlily hond open. 'Phil/looking; iclanrp l5 in 4pre erafbly eo ehapeil an `to con' )rin to the contmlr of the cloeed ibook Ajproviding; .a special h olding groove ilittilrg over eoeheover edge. y

'Th e airelnnriiig .strap lfl may ibe yeither `narrowyae ehownin Figs. 'Land 2,01* `it iii-ay c`on form iii-.size to la liull leaf oreheetof :theibook and haveperoratione 1fittingover the posts (5 so as: to be placed between the leaves o., .1e hook Het aegon additional leaf. dnithelhollilcation ot `the invention .illustrated s"in .1i ige. l and 2 the Strap is of relatively narrow width and is intended to be inserted over the top leaves of the book directly underneath the upper cover 4, and in order to provide a more convenient connection between the loop member 13 ol the Strap and the clamp 15, the

yfront end of the strap is offset downwardly f strap fitting overV a post 6 that holds the leaves together. Such construction is shown inv Fig. 3, wherein an anchoring strap 11 has its rear Vend' perforated to lit over the post G of the book, the front end of the strap projectingjinto the slot 16 of the locking clamp l5. like Vthe arrangementv of Figs. l and 2.

The locking arrangement of my invent-ion f is alsol adapted to be applied for locking the upper or lower edge of the book. Suc 1 arrangement is shown in Figs. land 5 wherein y an anchoring strap 20, resembling the shape of a rectangular? triangle, is anchored between the rear edges at the lower end of the I kbook and has a loop member 2l projecting in front of the lower edge of the leaf package and is arranged to fit into a locking clamp l5 similar to the 'clamp l5 described above. The lockingclamp may be locked in place by a padlock inserted through the loop 2l. Instead'of a padlock locking connection be tween the loop members 13, any other locking connection may, ofcourse, be used, for instance, the lock may be embodied directly in the 'locking clamp 15.

The locking clamp may be also arranged to be adjustable for Vbooks of different thicknesses, as shown iin Fig. 6, Vthe clamp consistv ing of two parts 25, 26 adapted to lit over the book edges, and telescopic or overlapping portions 27, 28 extending towards and lit-ting into each other, the overlapping portions being provided with slots 29 through which the loop member vof the anchoring strap may be inserted. The slots 429 in the overlapping portions of the upper and lower clamping ymembers, 25 and 26, respectively, are arrangedto register so that the loop member v13 may be inserted therethrough to provide different thicknesses of the clamp.

rlhe invention is susceptible of many other v modilieations that will suggest themselves to those skilled inthe art and it is, accordingly, desired thatA the appended claims be given a broad construction commensurate with the u scope of the invention within the art.

I claim: l. The combination with a book having a pack of leaves and a pair of relatively rigid covers, of a locking device therefor comprising a loose strap anchored between the covers, a loose clamp adapted to tit over and hold together the open edges of the covers, and a locking connection between the strap and the clamp.

2.: The combination with a book having a pack of leaves and a pair of relatively rigid covers clamped to one side of said pack, of a locking device therefor comprising a strap anchored between the covers at the back edges of the sheets .and having a portion projecting in front of the open edges of the leaves, a loose clamp adapted to ht over and hold together the open edges of the covers, and a locking connection between the projectingl portion of the strap and said clamp.

3. The combination with a loose leaf book having a pack of loose leaves and a pair of binder covers having means for clamping said pack of leaves at the back edge thereof, of a locking device therefor comprising a strap anchored between the covers at the back edge of said leaves, a clamp adapted to lit over and hold together the open edges of the covers, said strap having a projecting portion extending in front of the open edges of the leaves, vand a locking connection between .said projecting portion and said clamp.

4. The combination with a book having a pack of sheets, a locking strap bound withy the sheets, a clamp adapted to embrace free edges of said sheets, and means for locking said clamp to said locking strap.

5. The combination with a book having a pack of sheets, an anchoring strap bound with said sheets, an extensible clamp adjustable for dierent thicknesses embracing said sheets at the outer edges thereof, and means for locking said clamp to said strap.

6. The combination with a book having a pack of leaves and a pair of covers, of a locking device comprising a strap anchored hetween the covers, a clamp adapted to engage and hold together the open edges of the covers and a locking connection between the strap and the clamp.

7. The combination with a book having a pack of leaves and a pair of covers therefor, of a locking device comprising` a strap anchored between the covers, a clamp adapted to engage and hold together the open edges of the covers, said clamp being adjustable for various thicknesses, and a locking connection between the strap and the clamp.

In testimony whereof I have hereunto subscribed my name.

MARSHALL Il. JACKS() N. 

